1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2018 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 ********************************************************************/ 23 24 #define LPFC_NVMET_DEFAULT_SEGS (64 + 1) /* 256K IOs */ 25 #define LPFC_NVMET_RQE_MIN_POST 128 26 #define LPFC_NVMET_RQE_DEF_POST 512 27 #define LPFC_NVMET_RQE_DEF_COUNT 2048 28 #define LPFC_NVMET_SUCCESS_LEN 12 29 30 #define LPFC_NVMET_MRQ_OFF 0xffff 31 #define LPFC_NVMET_MRQ_AUTO 0 32 #define LPFC_NVMET_MRQ_MAX 16 33 34 #define LPFC_NVMET_WAIT_TMO (5 * MSEC_PER_SEC) 35 36 /* Used for NVME Target */ 37 struct lpfc_nvmet_tgtport { 38 struct lpfc_hba *phba; 39 struct completion *tport_unreg_cmp; 40 41 /* Stats counters - lpfc_nvmet_unsol_ls_buffer */ 42 atomic_t rcv_ls_req_in; 43 atomic_t rcv_ls_req_out; 44 atomic_t rcv_ls_req_drop; 45 atomic_t xmt_ls_abort; 46 atomic_t xmt_ls_abort_cmpl; 47 48 /* Stats counters - lpfc_nvmet_xmt_ls_rsp */ 49 atomic_t xmt_ls_rsp; 50 atomic_t xmt_ls_drop; 51 52 /* Stats counters - lpfc_nvmet_xmt_ls_rsp_cmp */ 53 atomic_t xmt_ls_rsp_error; 54 atomic_t xmt_ls_rsp_aborted; 55 atomic_t xmt_ls_rsp_xb_set; 56 atomic_t xmt_ls_rsp_cmpl; 57 58 /* Stats counters - lpfc_nvmet_unsol_fcp_buffer */ 59 atomic_t rcv_fcp_cmd_in; 60 atomic_t rcv_fcp_cmd_out; 61 atomic_t rcv_fcp_cmd_drop; 62 atomic_t rcv_fcp_cmd_defer; 63 atomic_t xmt_fcp_release; 64 65 /* Stats counters - lpfc_nvmet_xmt_fcp_op */ 66 atomic_t xmt_fcp_drop; 67 atomic_t xmt_fcp_read_rsp; 68 atomic_t xmt_fcp_read; 69 atomic_t xmt_fcp_write; 70 atomic_t xmt_fcp_rsp; 71 72 /* Stats counters - lpfc_nvmet_xmt_fcp_op_cmp */ 73 atomic_t xmt_fcp_rsp_xb_set; 74 atomic_t xmt_fcp_rsp_cmpl; 75 atomic_t xmt_fcp_rsp_error; 76 atomic_t xmt_fcp_rsp_aborted; 77 atomic_t xmt_fcp_rsp_drop; 78 79 /* Stats counters - lpfc_nvmet_xmt_fcp_abort */ 80 atomic_t xmt_fcp_xri_abort_cqe; 81 atomic_t xmt_fcp_abort; 82 atomic_t xmt_fcp_abort_cmpl; 83 atomic_t xmt_abort_sol; 84 atomic_t xmt_abort_unsol; 85 atomic_t xmt_abort_rsp; 86 atomic_t xmt_abort_rsp_error; 87 88 /* Stats counters - defer IO */ 89 atomic_t defer_ctx; 90 atomic_t defer_fod; 91 atomic_t defer_wqfull; 92 }; 93 94 struct lpfc_nvmet_ctx_info { 95 struct list_head nvmet_ctx_list; 96 spinlock_t nvmet_ctx_list_lock; /* lock per CPU */ 97 struct lpfc_nvmet_ctx_info *nvmet_ctx_next_cpu; 98 struct lpfc_nvmet_ctx_info *nvmet_ctx_start_cpu; 99 uint16_t nvmet_ctx_list_cnt; 100 char pad[16]; /* pad to a cache-line */ 101 }; 102 103 /* This retrieves the context info associated with the specified cpu / mrq */ 104 #define lpfc_get_ctx_list(phba, cpu, mrq) \ 105 (phba->sli4_hba.nvmet_ctx_info + ((cpu * phba->cfg_nvmet_mrq) + mrq)) 106 107 struct lpfc_nvmet_rcv_ctx { 108 union { 109 struct nvmefc_tgt_ls_req ls_req; 110 struct nvmefc_tgt_fcp_req fcp_req; 111 } ctx; 112 struct list_head list; 113 struct lpfc_hba *phba; 114 struct lpfc_iocbq *wqeq; 115 struct lpfc_iocbq *abort_wqeq; 116 dma_addr_t txrdy_phys; 117 spinlock_t ctxlock; /* protect flag access */ 118 uint32_t *txrdy; 119 uint32_t sid; 120 uint32_t offset; 121 uint16_t oxid; 122 uint16_t size; 123 uint16_t entry_cnt; 124 uint16_t cpu; 125 uint16_t idx; 126 uint16_t state; 127 /* States */ 128 #define LPFC_NVMET_STE_LS_RCV 1 129 #define LPFC_NVMET_STE_LS_ABORT 2 130 #define LPFC_NVMET_STE_LS_RSP 3 131 #define LPFC_NVMET_STE_RCV 4 132 #define LPFC_NVMET_STE_DATA 5 133 #define LPFC_NVMET_STE_ABORT 6 134 #define LPFC_NVMET_STE_DONE 7 135 #define LPFC_NVMET_STE_FREE 0xff 136 uint16_t flag; 137 #define LPFC_NVMET_IO_INP 0x1 /* IO is in progress on exchange */ 138 #define LPFC_NVMET_ABORT_OP 0x2 /* Abort WQE issued on exchange */ 139 #define LPFC_NVMET_XBUSY 0x4 /* XB bit set on IO cmpl */ 140 #define LPFC_NVMET_CTX_RLS 0x8 /* ctx free requested */ 141 #define LPFC_NVMET_ABTS_RCV 0x10 /* ABTS received on exchange */ 142 #define LPFC_NVMET_DEFER_WQFULL 0x40 /* Waiting on a free WQE */ 143 struct rqb_dmabuf *rqb_buffer; 144 struct lpfc_nvmet_ctxbuf *ctxbuf; 145 146 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 147 uint64_t ts_isr_cmd; 148 uint64_t ts_cmd_nvme; 149 uint64_t ts_nvme_data; 150 uint64_t ts_data_wqput; 151 uint64_t ts_isr_data; 152 uint64_t ts_data_nvme; 153 uint64_t ts_nvme_status; 154 uint64_t ts_status_wqput; 155 uint64_t ts_isr_status; 156 uint64_t ts_status_nvme; 157 #endif 158 }; 159